Law - Withdrawal of PCT Priority Claim

An applicant may withdraw a priority claim made in an international patent application. The notice withdrawing a priority claim must be received by the International Bureau or the Receiving Office before the expiration of 20 months from the priority date. If a Demand for international preliminary examination has been timely filed, the notice must be received before the expiration of 30 months from the priority date.

The position of the USPTO on this issue is described in the following section(s) of the Manual of Patent Examining Procedure (MPEP):

MPEP 1859 - Withdrawal of International Application or Designations

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